Earlier quoted context omitted.
> has better addons The add-ons might be better, but XUL-based Firefox add-ons are not better. They essentially give full control of your computer to the developer of the add-on. There's no permission model. The "APIs" are mostly the internals of Firefox itself, and when Firefox updates, lots of add-ons break. Most add-ons can be ported to webextensions. The ones that can't probably shouldn't have ever been add-ons t…
> They essentially give full control of your computer to the developer of the add-on. That's the entire point. Firebug could not have existed as a WebExtension, and thus without XUL addons the entire web development field could still be on Venkman or Script Editor rather than where it is now. The XUL extensions model allows extensions in ways unmatched by WE, and yes the development experience isn't tremendous and it…
For real. I understand the security argument, but that poster and Mozilla in general seem to be making the argument that "no, you're wrong, you don't know what you want, we're going to tell you what you want, and it's a less feature-rich Firefox."
Well, I use Firefox, and I evangelize Firefox to everyone I know, on the basis, essentially of the extensions, and most of the popular Firefox extensions would have never come into existence with the new extension model. Mozilla is developing APIs to grandfather some of them in, but they're still reducing the possibility space from "anything" to "what we expose through these APIs", so new extensions that change everything will no longer come into being.
And aside from that, they don't even cover everything; I've already been notified by the developers of two extensions I use that they either can't or won't be switching over.
I really do have to agree with the people who are saying Mozilla has totally lost the plot. I've disabled automatic updates until I can figure out what I'm going to do.